The γ-ray brightest days of the blazar 3C 454.3

被引：112

作者：

Bonnoli, G. ^{[1
]}

Ghisellini, G. ^{[1
]}

Foschini, L. ^{[1
]}

Tavecchio, F. ^{[1
]}

Ghirlanda, G. ^{[1
]}

机构：

[1] Osserv Astron Brera, INAF, I-23807 Merate, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2011年 / 410卷 / 01期

关键词：

radiation mechanisms: non-thermal; galaxies: active; galaxies: individual: 3C 454; 3; galaxies: jets; ACTIVE GALACTIC NUCLEI; SPACE-TELESCOPE SAMPLE; LARGE-AREA TELESCOPE; RADIO-LOUD QUASARS; X-RAY; MULTIWAVELENGTH OBSERVATIONS; BLACK-HOLES; SWIFT; OUTBURST; SPECTRUM;

D O I：

10.1111/j.1365-2966.2010.17450.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the first week of 2009 December, the blazar 3C 454.3 became the brightest high-energy source in the sky. Its photon flux reached and surpassed the level of 10-5 ph cm-2 s-1 above 100 MeV. The Swift satellite observed the source several times during the period of high gamma-ray flux, and we can construct really simultaneous spectral energy distributions (SEDs) before, during and after the luminosity peak. Our main findings are (i) the optical, X-ray and gamma-ray fluxes correlate; (ii) the gamma-ray flux varies quadratically (or even more) with the optical flux; (iii) a simple one-zone synchrotron inverse Compton model can account for all the considered SED; (iv) in this framework the gamma-ray versus optical flux correlation can be explained if the magnetic field is slightly fainter when the overall jet luminosity is stronger and (v) the power that the jet spent to produce the peak gamma-ray luminosity is of the same order, or larger, than the accretion disc luminosity.

引用

页码：368 / 380

页数：13

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